#include <stdio.h>

void one_three();
void two();

int main(void){
    printf("starting now:\n");
    one_three();
    two();
    printf("three\n");
    printf("done!\n");
    return 0;
}

void one_three(/* arguments */) {
    /* code */
    printf("one\n");
}
void two(/* arguments */) {
    /* code */
    printf("two\n");
}
